It is with great pleasure that I re-introduce Professor Robert Tsai. Robert has blogged with us before, and we are lucky to have him back to blog about his work, ideas, and I hope his new book America’s Forgotten Constitutions: Defiant Visions of Power and Community. I met Robert when we are at Yale Law School together. He was sharp and engaged then and has not slowed down since. He has held two clerkships — Hugh H. Bownes, U.S. Court of Appeals for the First Circuit, and Denny Chin, U.S. District Court for the Southern District of New York. He has litigated constitutional issues before federal and state courts. As a professor his papers have twice been selected for the Stanford-Yale Junior Faculty Forum: once in constitutional theory and once in constitutional history. Professor Tsai began his academic career at the University of Oregon and then joined the law faculty of American University in 2008 and was promoted to full professor the following year. Welcome back, Robert.